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A kind of strong corrosion-resistant galvanized steel strand and its manufacturing method

A galvanized steel strand, corrosion-resistant technology, used in textiles, papermaking, textile cables, etc., can solve problems such as economic losses, a lot of manpower and material resources, and achieve the effects of preventing pollution, improving mechanical properties, and increasing strength and toughness.

Inactive Publication Date: 2017-09-01
ROLLAS POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The replacement of cables requires a lot of manpower and material resources, causing huge economic losses, so it is imminent to study the corrosion of bridge cable systems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a strong corrosion-resistant galvanized steel strand, the weight percentage of each component of which is:

[0031] C: 0.83%, Mn: 0.76%, Si: 0.09%, Cr: 0.53%, Mo: 0.16%, Ni: 0.41%, V: 0.015%, B: 0.003%, P: 0.015%, S: 0.012%, Cu: 0.17%, N: 0.005%, and the balance is Fe and unavoidable impurities.

[0032] This embodiment also provides a method for manufacturing a strong corrosion-resistant galvanized steel strand, the specific steps include: wire rod hydrochloric acid washing-water washing-high-pressure water washing-phosphating-water washing-saponification-drying-drawing-lead bath -Washing-pickling-washing-helping-galvanizing-twisting-stabilization treatment-packaging-warehousing;

[0033] The wire rod is pickled with hydrochloric acid: the wire rod is put into a hydrochloric acid pool with a mass fraction of 16% for pickling for 20 minutes, and the iron oxide scale on the surface of the wire rod is removed;

[0034] The medium-temperature pho...

Embodiment 2

[0043] This embodiment provides a strong corrosion-resistant galvanized steel strand, the weight percentage of each component of which is:

[0044] C: 0.85%, Mn: 0.78%, Si: 0.13%, Cr: 0.55%, Mo: 0.18%, Ni: 0.43%, V: 0.025%, B: 0.005%, P: 0.005%, S: 0.004%, Cu: 0.08%, N: 0.001%, and the balance is Fe and unavoidable impurities.

[0045] This embodiment also provides a method for manufacturing a strong corrosion-resistant galvanized steel strand, the specific steps include: wire rod hydrochloric acid washing-water washing-high-pressure water washing-phosphating-water washing-saponification-drying-drawing-lead bath -Washing-pickling-washing-helping-galvanizing-twisting-stabilization treatment-packaging-warehousing;

[0046] The wire rod is pickled with hydrochloric acid: the wire rod is put into a hydrochloric acid pool with a mass fraction of 18% for pickling for 15 minutes, and the iron oxide scale on the surface of the wire rod is removed;

[0047] The medium-temperature pho...

Embodiment 3

[0056] This embodiment provides a strong corrosion-resistant galvanized steel strand, the weight percentage of each component of which is:

[0057] C: 0.84%, Mn: 0.77%, Si: 0.11%, Cr: 0.54%, Mo: 0.17%, Ni: 0.42%, V: 0.020%, B: 0.004%, P: 0.010%, S: 0.008%, Cu: 0.12%, N: 0.003%, and the balance is Fe and unavoidable impurities.

[0058] This embodiment also provides a method for manufacturing a strong corrosion-resistant galvanized steel strand, the specific steps include: wire rod hydrochloric acid washing-water washing-high-pressure water washing-phosphating-water washing-saponification-drying-drawing-lead bath -Washing-pickling-washing-helping-galvanizing-twisting-stabilization treatment-packaging-warehousing;

[0059] The wire rod is pickled with hydrochloric acid: the wire rod is put into a hydrochloric acid pool with a mass fraction of 17% for pickling for 18 minutes, and the iron oxide scale on the surface of the wire rod is removed;

[0060] The medium-temperature pho...

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PUM

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Abstract

The invention discloses a galvanized steel strand with strong corrosion resistance. The weight percentages of the components are: C: 0.83-0.85%, Mn: 0.76-0.78%, Si: 0.09-0.13%, Cr: 0.53-0.55 %, Mo: 0.16‑0.18%, Ni: 0.41‑0.43%, V: 0.015‑0.025%, B: 0.003‑0.005%, P≤0.015%, S≤0.012%, Cu≤0.17%, N≤0.005%, The rest is Fe and unavoidable impurities; the invention also discloses a method for manufacturing a strong corrosion-resistant galvanized steel strand; the product of the invention has strong corrosion resistance, high fatigue resistance, and high purity of wire steel , uniform composition and structure, long service life.

Description

technical field [0001] The invention belongs to the technical field of metal products, and relates to a strong corrosion-resistant galvanized steel strand and a manufacturing method thereof. Background technique [0002] Since the 1990s, my country has built more than a hundred cable bridges (such as: suspension bridges, cable-stayed bridges and arch suspension bridges), but most of these bridges are carried by double towers or multi-towers. The requirements for toughness, plasticity, bending resistance and fatigue resistance are not high, and the designed service life of the bridge is about 60-80 years. With the increasing air pollution, the durability of bridge cable systems began to appear. The degree and speed of cable corrosion in many cable bridges greatly exceeded expectations. The cables that were designed to be replaced every 30 years were often used for more than 10 years due to various corrosions. Serious phenomena such as cable breakage occur. Even in order to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/54B21C37/04D07B1/06
Inventor 纪文伟姚圣法吴海洋
Owner ROLLAS POWER TECH CO LTD
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